30abc : abc = 241
=> ( 30000 +abc ) :abc = 241
=> 30000 : abc + 1 = 241
=> 30000 : abc = 240
=> abc = 30000: 240
=> abc = 125
b, abab + ab = 1326
ab .101 + 1.ab = 1326
ab ( 101 + 1) = 1326
ab . 102 = 1326
ab = 1326 : 1 02
ab = 13
=>101.ab+ab=1326
=>102.ab=1326
=>ab=1326:102
=>ab=13